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Upstream product

• 55059-73-9 carbonyl-ethanol{2,3,7,8,12,13,17,18-octaethylporphyrinato^(2-)}ruthenium⁽²⁺⁾ 
• 7688-25-7 1,4-di(diphenylphosphino)-butane 

Relevant academic research and scientific papers

Studies of ruthenium(II) porphyrins containing tertiary diphosphine ligands, including the crystal structure of (5,10,15,20-tetraphenylporphinato)bis(bis(diphenylphosphino)methane) ruthenium(II)-dichloromethane

The ruthenium(II) porphyrins Ru(porp)(PP)2, containing tertiary diphosphine ligands, have been prepared in high yields from Ru(porp)(CO)(C2H5OH) [porp = dianion of octaethylporphyrin (OEP) or tetraphenylporphyrin (TPP)] and the PP phosphines [Ph2P(CH2)nPPh2 (n = 1, 2) and Ph2P(CH2)2N(C2H5)(CH 2)2PPh2]. The crystal structure of Ru(TPP)(Ph2PCH2PPh2)2 shows six-coordinate ruthenium situated in the porphyrin plane and coordinated to two axial monodentate phosphine ligands, which each have a free dangling phosphorus atom. The analogous bis(1,2-bis(diphenylphosphino)ethane) complex almost certainly has the same structure and is the first reported case of a compound containing this common diphosphine in a monodentate fashion. The 31P NMR spectra of the Ru(porp)[Ph2P(CH2)nPPh2]2 compounds indicate further structures in solution, including species with a chelated diphosphine. An isolated Ru(OEP)[Ph2P(CH2)4PPh2] complex is likely a polymer incorporating diphosphine bridges.